Thank you for your explanation.

On Thu, May 12, 2011 at 10:15 PM, arton <artonx / yahoo.co.jp> wrote:
> The lack of WIN32 causes bad result (compilation error) of conftest for
> win32 extension libraries.
(snip)
> =A0- but no other user specific macro or header are supplied
> =A0- win32.h includes winsock2.h and it requrires WIN32 or _WIN64 but

Doesn't it work to include windows.h from ruby/win32.h?
I'm not sure but I'm worry about what happens on WIN32 macro defined
on x64 conftest.

--=20
Yuki Sonoda (Yugui)
yugui / yugui.jp
http://yugui.jp